A Practical and Efficient Synthesis of (3<i>R</i>,4<i>S</i>)-1-Benzyl-4-phenylpyrrolidine-3-carboxylic acid via an Aziridinium Ion Intermediate
作者:Atsushi Ohigashi、Takashi Kikuchi、Shunsuke Goto
DOI:10.1021/op900230r
日期:2010.1.15
utilizing a stereospecific and regioselective chlorination of in situ generated aziridiniumion, followed by a nitrile anion cyclization. Starting from commercially available (R)-styrene oxide and 3-(benzylamino)propionitrile, the four-step synthesis features a through process without purification of intermediates until isolation of crystalline 1. The robust, chromatography-free and reproducible synthesis
NOVEL METHOD FOR PRODUCING OPTICALLY ACTIVE PYRROLIDINE COMPOUND
申请人:Ohigashi Atsushi
公开号:US20120022271A1
公开(公告)日:2012-01-26
[Object]
A novel method for producing an optically active pyrrolidine compound, which is useful as a production intermediate of a pharmaceutical, and a production intermediate thereof, is provided.
[Means for Solution]
According to the production method of the present invention, a chloro compound that is a key intermediate can be produced efficiently industrially by subjecting a mixture of regioisomers obtained by reacting an optically active epoxy compound substituted with aryl, which is easily available, with an amine compound, to chlorination. Furthermore, an optically active pyrrolidine compound can be produced industrially efficiently with the key intermediate.
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